Improvement in bolts



UNITED STATES PATENT OFFICE.

DANIEL A. ROBINSON, OF ELIZABETH, NEW JERSEY.

-IMPROVEMENT IN BCLTS.

Specification forming part of Letters Patent No. 152,009, dated June 16,i874; application filed NOVember 11, 1873.

.To all whom it may concern:

Beit known that I, DANIEL A. ROBINSON, of the city of Elizabeth, in thecounty of Union and State of New Jersey, have invented certainImprovements in Slide-Bolts, of which .the following is a specification,reference being had to the accolnpanyin g drawings.

My invention relates to a new and improved mode of constructing slide-bolts for use-on doors, closets, gates, &c.; and consists in forming abolt and its case out of sheet or cast metal in such a way that both maybefirmlyfastened to the object to which they are to be applied by meansof a single screw, in combination with points or spurs projecting fromthe side next to its seat. It also consists in making a slot or openingin the forward end of the bolt.

To enable others skilled in the art to make, construct, and use myinvention, I will now proceed to describe its parts in detail.

Figure l is a perspective view of the case, bolt, and catch. Fig. 2 is alongitudinal sectional vierw. Fig. 3 isa plan view. Fig. 4 is the boltitself removed from its case B. Fig. 54 is a plan view of the bolt andcase, as seen from the under side. Figs. 6, 7 are modifications in theform of the bolt.

A is a catch, and is fastened to its place by a single'serew, M, and bythe points F, which penetrate'into the wood and prevent any lat'-r eralmovement. B is the case, in which the bolt E slides. The opening D is toadmit the screw L, which penetrates the wood through the slot" Kin thebolt E, and, together with the points F, formed fron a portion of theflange, secure theY case and bolt firmly to their place, flanges b bbeing turned inward and vserving as guides tothe bolt. VThe knob G isattached to the bolt E by means of the rivet 0. The slot H in the case Bpermits the bolt E to be slid back and forth by the knob G, and thusfasten or unfasten the bolt. The slot or opening J in the forward end ofthe bolt E is to allow the bolt to embrace the screw M and fully enterthe catch A. The slot K in the body ofthe bolt E is to allow the screw Lto enter the wood through the opening D and thus fasten the boltfand itscase to the door.

Figs. 6 and 7 show a modication of this device, in which the case B andthe slot K are made a little longer, so that aspiral spring can beintroduced into the slot K of the bolt E, and force the bolt forward outof the case and into the catch A, and thus cause the fastening to beautomatic in its action. In this construction the end of the'bolt E mustbe made with a bevel, so that it will slide hack on striking against thecatch A, as shown in Fig. 7.

Having described my invention, what I claim as new, and desire to secureby Letters Patent, is

l. A bolt-case, B, formed of a single piece of metal and provided with aslot, K, 'central screw-hole L', and points F, substantially asdescribed, and for the purpose set forth.

2. The centrally-slottedbolt E, having slotted end J, incombination'with a bolt-case, B,

formed of a single piece of metal and provided with a slot, K, centralhole L, and points F, as described, for the purpose set forth.

3. The combination of a'catch, A, provided with a single central openingfor the passage of a screw and points F with a centrally-slotted bolthaving a slotted end, substantially as described, and for the purposesset forth.

DANIEL A. ROBINSON.

Vitnesses:

MORTIMER J. ENNIs, NVM. H. RrBLET.

